The actress, who plays devoted volunteer coordinator Aretha Gupta in the movie, claimed that Alonso is a brilliant actor.
"Laz Alonso is a talented and exciting actor," Sherawat told Mid Day.
"I'm very lucky to be working with him."
Directed by Doug McHenry, Love, Barack documents the lead-up to Barack Obama's election as president of the US.
The film also stars Ruby Dee, Gerry Bednob and Loretta Devine.